Versions with magnesium may cause diarrhea, and brands with calcium or aluminium may cause constipation and rarely, long-term use may cause kidney stones. Long term use of versions with aluminum may increase the risk for getting osteoporosis.
^U.S. Department of Health and Human Services, National Institutes of Health, U.S. National Library of Medicine. Page last updated: 07 November 2014 Medline Plus: Taking Antacids
^Zajac, P; Holbrook, A; Super, ME; Vogt, M (March–April 2013). "An overview: Current clinical guidelines for the evaluation, diagnosis, treatment, and management of dyspepsia". Osteopathic Family Physician5 (2): 79–85. doi:10.1016/j.osfp.2012.10.005.
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